function isNumber(obj){var re = /^[0-9]*$/;if(obj.value!='' && re.test(obj.value)){return true;}else{obj.focus();return false;}}

function isNumOrEng(obj){
	var re = /^\w+$/;
	var re2 = /^\w+[\u4e00-\u9fa5]$\w+/;
	if(obj.value!='' && re.test(obj.value)&& !re2.test(obj.value)){
		return true;}else{obj.focus();return false;
	}
}
function isNotUseable(){
	alert("此功能正在开发中");
}